Checking front communication link operation - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - Operation Manual - REX615 Protection and control - PCL2 - IEC - ANSI - 03.05.2023
REX615 Operation Manual
To verify front communication, check that both LEDs above the RJ-45 communication port are lit.
Table 1. Front communication LEDs
| LED |
Communication ok |
| Uplink |
Steady green light |
| Communication |
Flashing yellow light |